Walmart, O'Rielys, Autozone...any place like that should have one that will hookup to your vehicle...may be the same type you are talking about...the Hoppy brand?? I would leave what you have alone...get a four wire flat plastic that has the male and female ends on them...splice it in...put heat shrink wrap 3M brand from Walmart...tape it up with electrical tape and go on about your merry way. I would pick up some dielectric grease and put in the female side though. Then you won't have any other problems.
"But if serving the Lord seems undesirable to you, then choose for yourselves this day whom you will serve, whether the gods your ancestors served beyond the Euphrates, or the gods of the Amorites, in whose land you are living. But as for me and my household, we will serve the Lord.” Joshua 25:15